A while ago, I had to analyse a large java heap dump, generated by one of our servers after a memory leak. This was hard. I usually use Eclipse MAT for the job, but this time, it was so large the tool could not parse the heap dump in an acceptable time, ... (more…)

The release of Java SE 15 in Sept 2020 will introduce "sealed classes" (JEP 360) as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may extend it. Sealed classes, like enums, capture alternative... (more…)

The Java hashmap is a widely used data structure! Won't it be awesome if you knew how it actually works behind the scenes? (more…)

nearenough - A Java implementation of the Roughtime secure time sync protocol...

As I've said before, I'm working on a book about lifetimes. Or maybe it's just a long series - I haven't decided the specifics yet. Like every one of my series/book things, it's... (more…)